Electric Motor Base Dimensions

The following are dimensional size charts for standard electric motor nema standard frames and configuration.

Electric motor base dimensions.

For c flange motors refer to. Dimensions drip proof totally enclosed fan cooled and explosion proof. Standardized motor dimensions are established by the national electrical manufacturers association nema are tabulated below and apply to all base mounted motors listed herein that carry a nema frame designation. Foot mounting dimensions listed are identical for either rigid or resilient base mounting.

Increase energy efficiency in belt driven systems while reducing wear on components use one of these bases to adjust your motor position to get the proper belt tension. Electrical induction motors synchronous speed the speed at which an induction motor operates depends on the input power. Electric motor calculator calculate amps hp and kva. Electric motor efficiency calculate electric motor efficiency.

Bases for constant speed applications keep your motor in a fixed position while operating. Bases for variable speed applications allow movement while operating to compensate for vibration and varying loads. Electrical electrical units amps and electrical wiring wire gauge and awg electrical formulas and motors. The following specifications documents and dimension charts are available as acrobat pdf files.

T h e s e d i m en s i o n s a r e s p e c i f i c t o e a c h m anu f a c t u r e r. We would like to show you a description here but the site won t allow us. For 56h combination foot refer to diagram 1. Nema shaft u k ey r dim n s 3 8 1 2 5 8 7 8 1 1 8 1 3 8 1 5 8 1 7 8 2 1 8 2 3 8 2 1 2 2 7 8 3 3 8 3 7 8 21 64 29 64 33.

Bases are design to provide adequate travel are fully adjustable by the use of a single adjusting screw and have elongated mounting holes in the base plate. All dimensions are approxi mate not to be used for construction purposes. See motor mount selection chart type 2 b standard base. Nema motor dimensions reference chart a ft e r l e t t e r i n d i c a t e s t h e n u m b e r i s a n app r o x i m a te v a l ue.